申请人:The British Petroleum Company p.l.c.
公开号:EP0023428A1
公开(公告)日:1981-02-04
he invention relates to a liquid liquid process for extracting metals from aqueous solution.
The process comprises bringing into contact the aqueous solution with an organic phase containing at least one complex-forming agent insoluble in water and corresponding to the general formula:
in which Z1 and Z2 represent an oxygen atom or a sulphur atom and may be the same or different and R' and R2 which may be the same or different represent straight or branched alkyl, cycloalkyl, aryl or aralkyl groups containing at least one electron-attracting group, to extract the metal from the aqueous solution
The process is used to extract nickel, copper, uranium, molybdenum, lead cadmium, cobalt. iron, zinc, vanadium, tin and tungsten
A second stage may be employed wherein the organic solution containing the metal is contacted with a second aqueous solution to strip the metal from the organic to the second aqueous solution
本发明涉及一种从水溶液中提取金属的液态工艺。
该工艺包括使水溶液与含有至少一种不溶于水且符合通式的络合剂的有机相接触:
其中 Z1 和 Z2 代表氧原子或硫原子,可以相同或不同;R'和 R2 代表直链或支链烷基、环烷基、芳基或芳烷基,可以相同或不同,且至少含有一个引电子基团。
该工艺用于提取镍、铜、铀、钼、铅、镉、钴、铁、锌、钒、锡和钨。
可采用第二阶段,将含有金属的有机溶液与第二种水溶液接触,将金属从有机溶液中剥离到第二种水溶液中